svg / d3.js rounded corner on one corner of a rectangle

Question

I know svg has an in built function to do rounded corners, but I need to do rounded corners on only 2 of the four corners.

I know I can draw multiple rectangles on t

Answer 1

Anyone who looks for an Eslinted version of stackmate -s answer:

function roundedRect(x, y, w, h, r, tl, tr, bl, br) {
  let retval;
  retval = `M${x + r},${y}`;
  retval += `h${w - (2 * r)}`;
  if (tr) {
    retval += `a${r},${r} 0 0 1 ${r},${r}`;
  } else {
    retval += `h${r}`; retval += `v${r}`;
  }
  retval += `v${h - (2 * r)}`;
  if (br) {
    retval += `a${r},${r} 0 0 1 ${-r},${r}`;
  } else {
    retval += `v${r}`; retval += `h${-r}`;
  }
  retval += `h${(2 * r) - w}`;
  if (bl) {
    retval += `a${r},${r} 0 0 1 ${-r},${-r}`;
  } else {
    retval += `h${-r}`; retval += `v${-r}`;
  }
  retval += `v${((2 * r) - h)}`;
  if (tl) {
    retval += `a${r},${r} 0 0 1 ${r},${-r}`;
  } else {
    retval += `v${-r}`; retval += `h${r}`;
  }
  retval += 'z';
  return retval;
}